Solution—Mystery in the Orient
The charred note made out to Cedric Agar by the car’s owner establishes the owner as either Leonard Ball or Alfred Huntley.
As we find in (4) that Leonard Ball is not the car owner, we know that Alfred Huntley is.
In (1) and (2) we see that the still living man and Ball are married while (3) and (4) show that the car owner is unmarried.
Consequently Alfred Huntley (the unmarried man) is not the survivor and as Leonard Ball is eliminated as the living man in (4) the survivor is Cedric Agar.
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A GOOD HEAD CANNOT READ AMISS.
—Emerson